Greedy business

I, like many other users purchased this app several years ago at full price. Now Im supposed to pay an annual subscription AND repurchase the app at full price again in order to continue using it!?! Forget about it. I could stomach an annual fee even though I think it should be waived for past users, but this is just greedy. Until this is changed I will not be continuing to use this app nor would I recommend it.

FFxyz341 about Spark - Shift Calendar, v2.3.2